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Aviation History
1938
1938 - 1417.PDF
MAY 19, 1938 35 THE AIRCRAFT ENGINEER SUPPLEMENT TO FLIGHT 502c Fig. 4.—A special crane brings the MercuryVIII engine up to the mounting. Note the pipes for taking air through the oil cooler. trols, engine controls, dashboard and instru- ment mountings, and so forth, and finally finishes at the top of the line, fully equipped and ready for passing forward to the horizontal fixture assembly. The glazing of the windows is not carried out at this stage, as there would be risk of damage, but is left until the final erection. A centre-section in its special erection jig is shown in Fig. 3. The front centre-section spar can be seen, with one engine and one engine mounting in place (note the fireproof bulkhead), and the rear fuselage portion is attached and visible beyond the centre-sec- tion. The jig is waiting to receive the front fuselage portion, the attachment of which forms the next stage. While this operation is in progress the fairings for engine mount- ings and nacelles are installed, together with the undercarriage units. Fig. 4 shows the front and rear fuselage portions mounted on the centre-section in th( special horizontal jig. One of the Bristol Mercury VIII engines is on the special crane, ready to be offered up into position on it> mounting. In this photograph, by the way, the special method of conveying air through the oil cooler should be noted. The next operation is the fitting of the exhaust collector ring. Fig. 5 illustrates the care taken to ensure that the stub pipes with their spherical seatings are correctly fitted to Fig. 5.—Cleaning the stub pipes before assembly on the exhaust ring collector.
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